All categories

3 years ago

Are they all right? If not please tell me what the answers are. Thanks! (Math)

Mathematics

2 answers:

MAXImum [283]3 years ago

4 0

Answer:

yes

Step-by-step explanation:

They are absolutely correct. Good Job

Lesechka [4]3 years ago

4 0

I believe they’re all correct. I hope u get a good grade

You might be interested in

The total number of fungal spores can be found using an infinite geometric series where a1 = 8 and the common ratio is 4. Find t

GalinKa [24]

Answer:

$S_{n} = \frac{2(4^{n}-1) }3} if r>1$

Step-by-step explanation:

Explanation:-

Geometric sequence:-

The geometric sequence is of the form

$a,ar,ar^{2},ar^{3}$ ……… be an infinite sequence

here first term is 'a' and ratio is 'r '

In this geometric sequence 'n' t h term is $t_{n} = a r^{n-1}$ ....(1)

Given data a1 term is '8 ' and ratio is '4'

substitute n=1 in equation(1)

$t_{1} = a r^{1-1}$ = 8

$ar=8$ ...........(2)

substitute r= 4 in equation(2)

now we get a(4)=8

dividing "4" on both sides , we get a = 2

Geometric series:-

$a+ar+ar^{2}+ar^{3}+$ .....is an infinite geometric series.

sum of this infinite series will be the upper limit of the fungal spores

that is we have to find sum of infinite series

$S_{n} = \frac{a(r^{n}-1) }{r-1} if r>1$

$S_{n} = \frac{2(4^{n}-1) }{4-1} if r>1$

$S_{n} = \frac{2(4^{n}-1) }3} if r>1$

Final answer:-

sum of this infinite series will be the upper limit of the fungal spores

$S_{n} = \frac{2(4^{n}-1) }3} if r>1$

5 0

3 years ago

there are 30 students in mr. Holland music class. If 30% of the students play in the school band, how many students in the class

Bond [772]

To calculate percentage, we turn the percentage into a decimal.

30% of 30 = 0.3 of 30 = 0.3 x 10

0.3 x 10 = 3

3 students play in the school band.

7 0

3 years ago

A mahogany desk with a cash price of $810 is offered on the installment plan at $50 down and $58 per month for 15 months. What i

Sergio039 [100]

Total cost
50+(58×15)
=920

5 0

3 years ago

Read 2 more answers

Find the length of the third side. If necessary, round to the nearest tenth.

NikAS [45]

Use the Pythagorean theorem

Side = sqrt(8^2 - 6^2)

Side = sqrt(64-36)

Side = sqrt(28)

Side = 5.29

Rounded to nearest tenth = 5.3

7 0

3 years ago

Read 2 more answers

A coin is tossed and a number cube is rolled at the same time. What is the probability that the coin will land on tails and the

babymother [125]

A-1/12 because if you write down h1, h2, h3, etc.-same for tail….tail and four would show up once out of the twelve options.

8 0

2 years ago

Are they all right? If not please tell me what the answers are. Thanks! (Math)​

Are they all right? If not please tell me what the answers are. Thanks! (Math)